Drying apparatus



June lf3, 1944. M, F, HUEBSCH 2,351,429

DRYING APPARATUS .W

Filed Sept. 2l, 1942 2 ShetS-She-et l INVENTOR ATTORNEYS.

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Jun'e 13, 1944. M. F. HUEBSCH 2,351,429

DRYING APPARATUS Filed Sept. 2l, 1942 L, 2 Sheets-Sheet 2 1NVENTOR A Patented June 13, 1944 2,351,429 Y t name mans'rus Monte F. Huebsch, Milwaukee,

Huebsch Manutacturin Wis., a corporation oi' Application September 21, 1942,'Serial No. 459,090

Wis., asslgnor to Company, Milwaukee, isoonsin z claims. icl. si-lz'n The invention relates to drying apparatus.

The object of the invention'is toprovide a 'i drying apparatus having a plurality of dryingY tumblers and a single heater and a single exhaust means, the drying air being led iirstthrough one drum and then through the other" drum. Theapparatus herein shown land described has' the advantage oi saving floor space ih ajlaundryand permitting the use offdryingdrums which are smaller than the usual standard dryingdrums but are large enough to take care ofthe small" )and *ther like olf; individual batches of 'towels washings. ,v `g

The invention iufrther consistifln features hereinafter set .iortli and nio larly defined by claims atv the conclus Inthe drawings:` i i l "s broken away and Fig. 2 is a vertical line 2 2 of Fig.` 1.

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including steam heated coils L2 over which the drying'air is drawn through openings i3 in the casing.l

the compartment 9 and mounted for rotationin be of any suitable form to the drum andfdrum mounting of the prior U. S. Patent No. 2,048,743,dated July 28, '1936,' to myself and P. M. Pearson. As shown, the drums are of sheet metal having a plurality of apertures I6, a flanged opening l1 in one end, lifti'ig ribs I3'and a shaft mounting I3 at the other end to which a shaft 2li is secured. As in the above mentioned patent, access to each drum is through a door 2l hinged to the casing at 22 and normally covering a ilanged opening 23 in the casing alined with but slightly smaller than the opening I1 in each drum. Each'door is held in normally closed position by a' latch 24 pivoted on the door at 24' and engageable with a keeper 25 onthe casing,

The partition 1 has a centrally disposed opening 26 forming a restricted passageway between the compartments 9 and Il, and the partition 3 cooperates with a'plate 21 to form an opening 23 for an exhaust air passage!! through which the spent heated air is drawn by an exhaust fan 30 driven through a suitable gear drive connection. 3l by4 an electric motor 32.

Fig. 1 is as .front elevation view of a drying vap.- p'aratus embodying. the invention, parts'fbein'g parts beingl shownin section;v sectional view take'n 'en the A heater ll is mounted on the `vtop ofthe casingv and is of known 4form A drying drum Il is mounted lfor rtation in o a similar drum II is the compartment i0.- These drums Il and Il and their mountings may but are preferably similar Referring to the drawings, the numerailudesig, .-'V

having a centrally flo-V :Y n 25 dividing the casing into, drier, compartments 3 o 'several n A,pgarticuf' vghereof. l

havingfa sprocket 34 mounted thereon and connected by a chain 35 to a sprocket 36 on the shaft 20 for the lower drum which :also carries a vsprocket 31 connected by chain 38 with a sprocket l33 on the shaft 2li of the upper drum, the ratio l oir the gearing connections being such that both drum' shafts are driven at-the same speed.

With the above arrangement each of the drums A* i4 and ii is charged with a separate family washing of towels or other articles to be dried, and thenthe door to each drum closed, and the motor 32'started to rotate the charged drums and rotate the fan 3B so as to ,draw air heatedby the heater lIl through the opening 6 and into the compartment 9 where it may pass through the apertures l i3 'in the drum i4 and take up moisture from the material therein, and then pass through the opening 28 into the compartment l0 where it may pass through the apertures I6 in the drum f l5 and take on more moisture from contact with -the material therein and then 'pass out through the opening 28 andthe exhaust passage 29 to be expelled by the fan 30 to atmosphere, through the outlet 40 of thev fan casing.

With thgaboyeaarrangement a more eiiicient drying actiois had than with the usual arrangements, since after the warmairs passage through ,the first drum, there is still enough heat left in it to take out more moisture from the materials in the second drum, and while the contents of the top drum dry a little iaster than bottom drum, this eii'ect may be offset by putting a larger load of material in the top drum than in the lower drum'. The arrangement also conserves "iloor A j space, and heat and power for operation.

Idesire it to be understood that this inventin v is not to be limited to any particular form or with the casing below the lower drying drum.

2. In a laundry drying apparatus, the combination of a casing having upper and lower compartments with a restricted opening there- The drive connection also includes a shaft 33 60 between, perforated drying drums revolubly mounted in said compartments, an air heater communicating with the upper compartment to supply the drying air for said drums, an exhaust fan communicating with the bottom portion of the lower compartment for removing the waste air from said casing, and a common means for driving said drums.

MONTE F. H. 

